Which of the following statements is true?1. Top-down and bottom-up design strategies are complementary.2. Top-down and bottom-up design strategies are mutually exclusive.3. A primary emphasis on a top-down approach may be more productive forsmall databases with few entities, attributes, relations, and transactions.4. A primarily bottom-up approach may be more productive for situationsin which the number, variety, and complexity of entities, relations, and transactionsis overwhelming.